To connect to an FTP server using FileZilla client, you can follow these steps:

Step 1: Download and install FileZilla client. Visit the official FileZilla website (https://filezilla-project.org/) and download the client software suitable for your operating system (Windows, macOS, Linux). Install the software on your computer.

Step 2: After installation, launch the FileZilla client software on your computer.

Step 3: In the FileZilla menu, click on "File" and select "Site Manager" (or you can press Ctrl+S) to open the Site Manager window.

Step 4: In the Site Manager window, click on the "New Site" button and give it a name (e.g., "My FTP Server").

Step 5: In the "General" tab of the Site Manager, specify the FTP server's address in the "Host" field. You can also choose the protocol (FTP, FTPS, SFTP) and set the port number if it's different from the default (21 for FTP, 22 for SFTP). Select the appropriate encryption if using FTPS.

Step 6: In the "General" tab, choose the appropriate Logon Type (usually "Normal") and provide the username and password for the FTP server.

Step 7: Click on the "Connect" button to test the connection. FileZilla will attempt to establish a connection to the FTP server using the provided settings.

Step 8: Accept and save certificates (if applicable): If you are connecting to an FTPS server and it presents a certificate, FileZilla will prompt you to accept and save the certificate. Review the certificate details and click on the appropriate option to proceed.

Step 9: Once connected, the FileZilla client will display the local files on your computer on the left side and the remote files on the FTP server on the right side. You can navigate through the directory structure of the FTP server by double-clicking folders.

Step 10: To upload files to the FTP server, select the files from your local computer and drag them to the desired location on the remote server. To download files from the FTP server to your computer, select the files from the remote server and drag them to your local computer's directory.

That's it! You are now connected to the FTP server using FileZilla client and can transfer files between your computer and the remote server. Remember to disconnect from the server when you are done by clicking on the "Disconnect" button in FileZilla.